Microsoft Virtual Server 2005 R2 – guest disk issues   Leave a comment

Ever had a guest in VS2005 show "The device, \Device\Harddisk0, has a bad block." " Windows – Delayed Write Failed" "{Delayed Write Failed} Windows was unable to save all the data for the file" ?
I’ve run into this a few times. Seems the VS host process must have createfile (RWX/FC?) to the host’s volume/disk where the VHD’s reside (the whole tree up to the VHD files). The account the VM’s run under must have access – I create a group "VM Accounts", add my VM user accounts to it and grant FC to eg D:\ (Folder Only), D:\Server (Folder Only), D:\Server\VHD (Folder Only).
This resolves the issue. Nice work Microsoft.

Posted December 2, 2008 by benryanau in Microsoft

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